Chain extension of ketonic resins


Kizilcan N. , Akar A.

MACROMOLECULAR SYMPOSIA, cilt.122, ss.349-354, 1997 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 122
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1002/masy.19971220154
  • Dergi Adı: MACROMOLECULAR SYMPOSIA
  • Sayfa Sayıları: ss.349-354

Özet

Chain extensions of cyclohexanone-formaldehyde (CF) and acetophenone-formaldehyde (AF) resins via their hydroxyl groups were studied. The chain extension was regulated by the ratio of hydroxyl groups/reactive reagents. Dimethyl dichlorosilane, phosphorus oxychloride, toluene-2,4-diisocyanate, phthalic anhydride, tetrahydro phthalic anhydride, trimellitic anhydride, 4,4'-oxydiphthalic anhydride were used as chain extender reagent. It has been shown that solubilites, melting point and molecular weight of extended resins depended upon the characteristics of chain extender reagents.